Fastener-applying implement



Aug. 6, 1957 R. w. JENNY 2,801,415

FAsTENER-APPLYING IMPLEMENT Filed March 25. 1955 :5 Sheets-Sheet 1 3 Sheets- Sheet 2 R. W. JENNY FASTENER-APPLYING IMPLEMENT I N V EN TOR.

Roberl' WL/elzzy BY i /gZ ATTORMEYS.

gli as 85 Aug. 6, 1957 Filed March 25. v1955 United States Patent O FASTENER-APPLYING IMPLEMENT Robert W. Jenny, Westerly, R. I., assignor to Bosttch, Inc., Stonington, Conn., a corporation of Rhode Island Application March 25, 1955, Serial No. 496,641

8 Claims. (Cl. 144.4)

This invention relates to improvements in stapling implements Iand more particularly to a power-operated stapler for fastening together various articles or objects and tacking in place sheets of berboard and other materials.

One object of the invention is to provide an implement of the type indicated which may be held in one hand and applied to the work more conveniently in normally inaccessible locations for operation by duid-pressure.

Another object is to provide an implement of the type indicated having a removable insert for opening the throat orfguideway to clear it of jammed staples caused by misalinement of the staples or distortion in their shape.

Another object is to provide an implement of the type indicated having a swiveled connection between the handle and staple-driving mechanism for adjusting it to apply the staples to the work in any selected angular relationship with respect thereto while holding the handle in the most convenient position.

Another object is to provide an implement of the type indicated having its parts so constructed and arranged as to be readily disassembled for repair. or replacement and quickly reassembled with a minimum use of tools.

Another object is to provide an implement of 4the type indicated having an extension or rest at the end of the magazine for guiding the staple-strips thereinto in loading the magazine.

Further objects of the invention are set `forth in the following specification which describes a preferred form of construction of the implement, by way of example, as illustrated by the accompanying drawings. In the drawings:

Fig. 1 is a side elevational view of the complete implement shown with its parts in operative relationship;

Fig. 2 is a top plan view of the implement; 4

Fig. 3 is a longitudinal sectional view of the implement with lthe essential elements of the stapling mechanism shown in operative relationship Vand the ymagazine loaded with staples;

Fig. 4 is `a fragmentary side view-of the rearward portion of the magazine showing Ia staple-strip partly inserted thereinto; y

Fig. 5 is an end view of thestaple-magazne showing the extension on the core of the magazine for guiding the staple-strip into the magazine in loading it;

Fig. 6 is a part-sectional plan view of the implement showing Vthe magazine and staple-driving mechanism Arotated 90 relatively to the handle-member 'for applying staples in angular relation Withrespect to parts ofthe work;

Fig. 7 is a part-sectional front View of the implement showing the adjustable swiveled connecting means between the handle and the staple-driving mechanism and magazine; i

Fig. 8` is a transverse sectional view of the magazine taken on line 8 8 of Fig. l 'and showing the staplepusher in operative position on the staple-core;

Fig. 9 is asimilar transverse :sectional `view of .the

Patented Aug. 6, 1957 ICC magazine taken on line 9-9 of Fig. 4 land showing the pusher latched in raised position to permit insertion of the staples thereunder in loading the magazine;

Fig. 10 is a perspective view of the removable insertclosure for the throat through which the staples are driven;

Fig. 1l is a perspective view of the insert-closure viewed in the opposite direction; and

Fig. 12 is a transverse sectional plan view of the closurestructure at the forward end of the magazine. Y

In driving staples into hard and tough materials, such as fiberboard and plywood used in the building trades, or through numerous layers of thick material such as employed in the manufacture of wooden crates and other heavy structures, Aa power-operated implement is desirable. Another requirement is that it can be -operated at high speed for applying the staples to the work in rapid succession While being convenient for holding it in one hand. It is also desirable that the implement be convenient for loading its magazine with staples without danger of clogging to prevent their proper feeding into the throat of the implement. mechanism be so constructed and arranged that its parts may be-readily disassembled for cleaning or repair land quickly reassembled with a minimum use of tools.

A novel feature of the present implement consists in an ingenious form of construction by which the stapledriving mechanism and magazine yare rotatably adjustable relatively to the handle-member for applying staples to the work in ordinarily inaccessible locations such as inside containers or display cases; and also for applying staples close to and in parallel relation to the edge of an object; for example, wall panels, box sides and other articles. With the present improved construction the handle of the implement may be held in the right hand in the usual manner and the magazine and staple-driving mechanism rotated to the left or right as most convenient for applying the staples in close association with or in angular relation to the edge of the piece being operated on.

Referring to the drawings, the present implement embodies a hollow handle-member 2 containing a pressurechamber and an air-valve, being enlarged at its forward end to provide a head 3 formed with a bore 4 for receiving a vertical cylinder 5 in which a piston 6 is mounted for reciprocation to actuate a staple-driver 7. The vertical cylinder 5 is rotatably held in the bore 4 of the enlarged forward end portion or head 3 of the handle-member 2 by means later described. The cylinder 5 projects downwardly from the head 3 with a horizontal extension 9 projecting radially therefrom to support a hollow magazine 10 for containing a supply of staples. Fastened in a rectangular recess 11 `at the lower end of the cylinder 5 by screws 12 is a nosepiece 13 forming the forward part of the magazine 10. An upstanding bifurcated strut 14 welded to or formed integral with the rearward portion of the magazine 10 is fastened to the outer end of the extension 9 by a screw 15. The magazine 10 is thus secured to `and in parallelism with the horizontal eXtension 9 with a narrow opening above its side walls intervening therebetween. p

The staple-driver 7 is of usual blade-like construction being connected to the piston 6 for reciprocation thereby so that during its descent it acts to sever the foremost staple from a strip in the magazine 10 and thereafter its motion is accelerated to drive the staple into the work under a maximum force. The air-valve in the handlemember 2 may be of any suitable construction, but preferably it is of the quick-opening type such as next described.

Referring to Fig. 3, the under side of the handlemember Z is provided with avertical bore 16 for receiv It is further desirable that the operating ing a cylindrical valve-housing 17 formed with an axial bore 18V to slidably mount a plunger 19. Above the bore 18 is a larger counterbore 20 from which a port 21 opens laterally into a duct 22 continuing upwardly therefrom.

The duct 22 terminates in a relatively constrictedpassage opening into the upper end of the bore of the cylinder 5. A pin 23 projecting transversely through thesides of the-handle-member 2 engages in a groove in the'side of the valve-housing 17 to secure it in place. Extending 1ongitudinally within the handle-member 2 is an air-chamber 24 which may be closed at its rearward end by a screwthreaded plug 25. A nipple 26 screwed into a threaded hole at the opposite end of the chamber 24 may have connected thereto a hose for communication with a source of compressed air or other duid-pressure. By this form of construction the nipple 26 may be applied to either end of the air-chamber 24 and the opposite end sealed by the plug for selecting the most convenient method of handlingl the implement with'the hose attached thereto.

The plunger 19 in the axial bore of the valve-housing 17 is reduced in diameter toward its upper end to form a stem 27 provided with an enlarged head 28 mounting a disk 29 riveted to the end of the stem. The disk 29 overlies a washer 30 adapted to seat against the end of the valve-housing 17. The upper portion of the valve-housing 17 is reduced in diameter to receive a flexible gasket 32 seated in the end of the bore 16 for sealing the joint at this point to prevent leakage of the pressure. Leading from the bore in the housing 17 is a duct 33 opening into a larger passage 34 which extends to the rearward end of the handle-member 2 to provide an escapeway for exhausting the air when the piston 6 is withdrawn to the upper end of the bore in the cylinder 5. The air-valve thus far described is generally similar in construction and arrangement to that disclosed in my prior pending application for United States Letters Patent Serial No. 393,347 filed November 20, 1953.

The air-valve may be operated manually by means of a trigger 35 constructed of sheet-metal with spaced ears 36 bent up from the forward end of its bottom wall 37. The trigger 35 is pivotally mounted on a pin 38 extendingV through the ears 36 handle-member 2 to adapt it to engage the end of the plunger 19 for raising it to open the end of the bore 20. The trigger 35 has an upstanding projection 39 adapted to strike against the under side of the handle-member 2 to limit its upward motion for opening the valve. The forward end of the trigger 35 is adapted to strike against the side of the cylinder 5 for limiting its motion in the opposite direction.

The cylinder 5 is rotatably held in the cylindrical bore 4 in the head 3 of the handle-member 2 by-a knurled nut 40 formed with external threads 41 (Fig. 3) and screwed into the bore which has internal threads 42. The upperY end of the nut 40 abuts a ring 43 constructed in two sections or halves and held in a shallow groove 44 in the periphery of the cylinder 5 by pins 45 (Fig. 6) to vprevent their movement therein. A set-screw 46 (Fig. 7) mounted free to turn in a hole 47 in the under side of the head 3 of the handle-member 2 has its threads engaging the threads 41 on the nut 40 to bind thereagainst for locking the nut in place to retain the cylinder 5 within the bore 4. The ring 43 is formed with V-shaped notches 5G spaced around its periphery at intervals of 45 and adapted to receive the V-shaped projection.. 51 of a detent-pawl 52 (Fig. 3) heldin an opening 53 on the-under side of the member 2. The pawl 52'is of generally rectangular shape with a bushing 55 projecting through-a transverse bore therein and pivoted on the pin 38' on which the trigger is pivotally mounted. The'pawl -52 iS` bifurcated with a central slot-56 in which a hairpin springV 57 is held surrounding the sleeve .55. One leg-58 of the. spring 57 bears against the forward side of the slot 56 in the pawl 52 whileitsother leg 59 engages against the rearwardwall of thefopeningSS 'in thehandle-rnember 2.A

and the lower portion of thev The V-shaped projection 51 on the pawl 52 is adapted to seat in one of the'notches 50 to releasably latch the cylinder 5 in whatever angular position it may be adjusted in relation to the handle-member 2. To adjust the cylinder 5 for setting the magazine 10 and staple-driving means to another position relatively to the handle-member 2, the magazine may be grasped in the hand to swing it t0 the right or left, the pawl 52 being forced out of the notch inwhich it is engaged against the tension of the spring 57. The pawl 52 will then automatically engage the next notch 50 in the series as the magazine 10 and the staple-driving means are rotated relatively to the handle-member 2 to adapt the staples to be applied with the implement held in the hand in the most convenient position.

The piston 6 is normally held raised in the bore 4 of the cylinder 5 by a helical spring 62, one end of which is engaged thereunder surrounding a reduced cylindrical projection 63 on the piston. The lower end of the spring 62 is seated on the anged rim 64 of a hollow guiding member 65 vheld in a counterbore 72 in the bottom of the bore of the cylinder 5. The staple-driver 7 is in the form of a relatively thin blade having its lateral edge portions ofthinner cross-section to form flanges 66 at either side thereof. The driver 7 has its upper end held in a slot 67 in the projection 63 on the under side of the piston 5 and fastened thereto-bya tubular'cross-pin 68.

The member 65 may be constructed of sheet-metal in hollow cylindrical shape with its top wall 69 provided with an -opening 70 havingV slots at its ends (Fig. 6) for guiding the staple-driver 7 as it slides therethrough in its descent during a driving stroke. The member 65 is seated on the top of the nosepiece 13, previously mentioned, its opening 70 in the top wall 69 being adapted to vent the air from the bore of the cylinder 5 as the piston 6 descends. Seated on the bottom of the bore of the cylinder 5 is a washer 73 constructed of rubber or other resilient material. Another washer 74, preferably constructed of nylon'4 or other plastic material to provide durability, is mounted in the bore above the washer 73. The washer 74 serves as a bumper to take the thrust and relieve the shock of the piston 6 as it is forced downwardly by pneumatic pressure to cause the descent of the staple-driver 6in applying ythe staples to the work; it being understood that the Washer 73 will yield slightly under the blow of the piston 6. A ring. 75 at the upper end of the bore in the cylinder 5 lserves as an abutment for limiting the upwardstroke of the piston 6 and also provides a slightly constricted pressure chamber at this point.

The magazine 10 comprises a trough-shaped casing having a bottomwall with spaced side walls 81 (Fig. 8) extending upwardly therefromV With a slight space at the top beneath the' horizontal member 9. Within the interiorof theY magazine 10 is a longitudinally-extending U- shaped staple-'core 83formed with a bottom wall 84 and sidewalls projecting upwardly to a height equal to that of the side walls 81 of the magazine. In the rearward end ofv the core 83 is an insert 86 (Fig. 3) welded or otherwise fastenedA to its side walls 85 and projecting beyond the end of the' magazine with its top of arcuate shape to. provide a rest for guiding the end of a staplestrip thereinto. Thestaple-core 83 is seated in a channelshaped sheet-metal strip 87 welded or otherwise fastened to the bottom wall 80 of the magazine 10. A cross-pin 89inserted through holes in the side walls 81 of the magazine 10 and through holes in the side walls 85 of the core 83 fastens the core in place.

A staple-pusher 90 (Fig. 8) formed from sheet-metal has a top wa1l91 adapted to'be slidably mounted on the core 83 `with U-shaped portions projecting downwardly at the sides in overlying contact with the walls 85. The pusher 90 isA also provided with outer depending legs 92 in overlying-contact with the outer side walls 81 of the magazine 10. The' legs 92 are provided with concave linger-tabs93 weldedorotherwise fastened thereto which servefor `manually sliding the pusher 90 rearwardly on the core 83. The pusher 90 is advanced longitudinally in the magazine by means of a helical wire spring 95 (Fig. 3) anchored at one end to a pin 96 bridging a central longitudinal slot 97 in the horizontal member 9 and held fast in holes in the sides thereof. At the forward end ofthe slot 97 in the member 9 is a roller or pulley 99 journaled on a pin 100 held fast in holes in the sides of the member. The spring 95 extends forwardly and down around the pulley 99 to reach rearwardly with its end fastened to a lug 101 bent up from the top wall of the pusher 90.

As previously indicated, the nosepiece 13 is constructed integral with or ixedly attached to the forward part of the magazine 10 with its upper end fitting closely within the recess 11 at the bottom of the cylinder 5, being fastened in place by the screws 12 threaded into the flaring end of the horizontal member 9 (Figs. 7 and 12). The nosepiece 13 has a vertical slot 106 in its forward face extending throughout its length with its lower portion forming the rearward face of the staple-throat through which the staples are driven. At the sides of the slot 106 the nosepiece 13 is undercutor slotted to provide guideways `107 (Fig. 7) for receiving the marginal portions of the detachable closure-plate or member 110 (Figs. 10-11) which forms the forward wall of the staple-throat. The closure-plate 110 has a vertical slot 111 on its face opposed to the :slot 106 in the nosepiece 13 with the lower portion of the slot reduced in depth to form a forward face at the bottom of the staple-throat. At the sides of the slot 111 are narrow faces 112 (Figs. 7 and 10) with shoulders ywhich cooperate with corresponding faces on the nosepiece 13 to form grooved guideways 113 for receiving the anges 66 (Fig. 1) on the sides of the staple-driver 7. The bottom of the closure-plate 110 is extended laterally at each side in abutments 114 which, together with its opposite beveled portion, form a foot 115 for the lower end of the nosepiece 13. The closure-plate 110 is reduced in thickness along its sides to` provide thinner ange-like portions 116 (Fig. 11) engageable with the guideways 107 on the sides of the nosepiece 13 to adapt the plate to slide upwardly therein for closing the front of the staple-throat. The upper part ofthe closure-plate 110 is slotted laterally to provide a series of cross-members or teeth 117 (Figs. 7 and 11), the final end tooth 118 being beveled on its sides for a purpose later explained.

The closure-plate 110 is held in place at the front of the .nosepiece 13 by means of a clamp 120 (Figs. 7 and 12) fastened in the opening 11 by the screws 12 which secure the nosepiece 13, and thereby the magazine 10, tothe end of the horizontal supporting member 9. For thislpurpose the strap-like clampv 120 extends laterally across the front of the nosepiece 13 (Figs. 1 and l2) with the shanks of the screws 12 projecting through holes at its ends and holes in ears 121 on the outer ends of the nosepiece for threaded engagement with the end of the horizontal member 9.

.The m'ember120 is formed at its center with a forwardly projecting box-like casing 122 having a horizontal bore 123 for receiving a slidable plunger 124. A pointed projection 125 on the forward end of the plunger 124 is adapted to engage betweenthe adjacent teeth 117, 118'on the face of the closure-plate 110. The plunger 124has an axial bore 126 containing a helical wire spring 127, one end'of which engages with the inner end of th'ebore 123 for sliding the plunger to engage its pointed projectionf125 between the teeth 117, 118 on the closureplate 1,10. It will thus be observed that when the closureplate110 isl slid upwardly in the guideways 107 on the nosepiece `13 its beveled tooth 118 will engage the pointed projection 125 on the end of the plunger 124 'to slide theI plunger rearwardly against the tension of the spring 127, whereafter the projection will snap into the slot between.` the tooth118 and the next adjacent tooth 1,17

as Vshown invFig. 3 to releasably latch the closure-plate in place. The purpose of the remaining teeth inthe series on the closure-plate is to provide a slot for the insertion of Va screw-driver whereby the closure-plate may be slid downwardly to release it from the spring-pressed plunger 124 for removing it from the nosepiece 13 when it is required to clean the staple-throat or removed clogged staples therefrom.

In the forward end of the staple-core 83 is a block-like insert welded or otherwise secured to the side walls of the core with its upper surface preferably beveled on the sides to conform to the crowned cross-bars or heads of staples shaped according to a preferred type. The forward vertical face of the insert 130 forms a shearing edge at the top for severing the foremost staple from the strip or rell cartridge as the plunger 7 descends to drive a staple through the throat for setting it in the work.

At the rearward end of the horizontal member 9 is a rectangular opening (Fig. 3) on its under side adapted to receive the upper portion of the staple-pusher 90 (Figs. 4.and 9) when it is drawn back to retain it therein for loading the magazine with staples. The forward end of the slotted opening 135 is beveled on the under side to adapt the staple-pusher 90 to be rocked and slid upwardly into the Opening 135. A notch 131 in the forward end of the opening 135 being engaged by the upper horizontal edge portions of the formed top wall 91 of the pusher 90 for latching it in place in raised relationship above the core 83 so that a strip of staples may be slid thereunder. After a stick of staples has been slid onto the core beneath the raised and latched pusher 90 (Fig. 4) and then slid forwardly therebeyond, the pusher may be released by retracting it slightly and rocking its forward end downwardly in under the beveled portion of the opening 135 in the member 9, The spring 95 will then draw the pusher forwardly for engaging the staples to successively feed them into the throat in the nosepiece 13 at the front of the magazine 10.

The method of operation of the implement is as next explained. To prepare the implement for operation after the magazine 10 has been loaded with staples s the handlemember 2 may be held in one hand while the operator grasps the member 9 and its connected magazine 10 with the other hand for adjusting the parts in the most convenient relationship. That is to say, the implement may be used either with the magazine extending in parallel relation to the handle-member 2 as in conventional devices of the present type; or the magazine may be rotated with respect to the handle-member 2 to set the staple-driving means and the throat through which the staples are driven in angular relation relatively to the handle-member. As the magazine 10 and its overlying supporting member 9 are turned to rotate the cylinder 5 within the bore 4 of the head 3 the detent-pawl 52 will be released from whatever notch 50 in which it is engaged to be carried around the periphery of the cylinder 5 for engaging any one of the other angularly related notches; for example, as illustrated by dash-lines in Fig. 6. In this way the staple-driving means and the throat through which the staples are discharged into the Work may be set in any desired angular relationship to apply staples at locations ordinarily inaccessible While the handle-member 2 is held in the most convenient position for operation of the implement. For example, by turning the staple-magazine and staple-driving means into certain angular relationship with respect to the handle-member 2, staples may be applied in constricted places such as the interior corners of a box or container while locating the staples close to the sides of the box. By a similar adjustment the staples may be set either parallel with or in angular relation to the edge of a frame, panel or other article while the handle-member is disposed in angular relation to the magazine and staple-throat whereby to provide for more convenient holdingv of' the implement in 'its application to the work.

- It will. be understood that the'implement-may'be connectedto a source of power, either pneumatic or hydraulic pressure, and by attaching a hose thereto by meansof the nipple 26, either at its head end or the rearward end of the handle-member 2, the nipple being displaceable from one end of the member to the other endsand the plug 25 used for closing the opposite end of the pressure chamber.

As the implement is held conveniently in one hand the operators forefinger is looped under the trigger 35 and by rocking it to raise the valve-plunger 19 it` will open the valve 21 whereby pressure is admitted to the upper end of the bore in the cylinder to act againsty the piston 6. Pressure on the piston 6 forces the stapledriverA 7- down through the throat in the nosepiece 13, thereby causing it to shear the foremost staple s from the stick or strip in the magazine 10 to drive it into the work. Release of the trigger 35 causes the pressure in the air-chamber 24 to act against the head 28 of the plunger 19 to' close the intake end of the valve and open the orifice opening therein for releasing the air to escape through the passage 34. Upon relief of pressure on the piston 6 the spring 62 will raise the piston 6 to the upper end of the bore in the cylinder 5 where its motion is limited by striking against the ring 75, thereby withdrawing the staple-driver 7 from the throat in the nosepiece 13.

As the staple-driver 7 is withdrawn in this manner the pusher 90 will slide the staple stick forwardly under the tension of the spring 95 to feed another staple into the throat in the nosepiece 13. Theparts of the stapledriving mechanism are thus returned to initial position to condition the implement for another operation. When the supply of staples held in themagazine 10 has been eX- hausted the operator may grasp the iingertabs 93 overlying the sides of the magazine to draw the staple-pusher rearwardly and raise it into the opening 135 to latch it in inoperative relationship so that a fresh supply of staples may be inserted into the magazine by resting the forward end of the stick on the rest or guide 86 to guide it onto the core 83.

lt will be observed from the foregoing specification that the present invention provides an improved stapler er fastener-applying implement which may be operated by pneumatic or hydraulic pressure, or in other cases may be constructed with manually-operative mechanical means for actuating the staple-driver. The present improved feature of adjustable means for setting the stapledriving means in different positions of angular relationship with respect to the handle-member by which the device is held, permits applying staples in congested or normally inaccessible locations, such for instance as the corner of a box or container, while allowing suicient room for conveniently holding the handle of the implement. This feature also provides for setting the staples in the work at various angles without changing the position of the handle-member as held in the hand of the operator. It also provides for setting staples in parallel alinement with the edge of an object or at varying angles with respect thereto. With the air-hose applied at the head 0r forward end of the handle-member 2 the implement may be handled more conveniently for applying staples to ceiling panels when it must be held overthe head of the operator.

rl`he construction of the detachable closure-plate for the nosepiece at the end of the staple-magazine provides for most convenient opening of the throat in the nosepiece for removing jammed or misalined staples therefrom, while also adapting-the closure to be readily replaced and automatically latched in position. Morever, the ,provision for disassembling the several parts of the implement t`o gain access to its operating mechanism for cleaning or repairing the parts is of very considerable advantagethe. only tool required being an ordinary screwdriver for use in both disassembling' andreassembling the parts.

WhileY the' invention is herein shown and described as embodied'in a preferred form of constructlon, 1t 1s to be understood that modifications maybe made 1n the structure and arrangement'of the parts of the device,y

and in the means for applying power thereto without departing from the spirit'and scope of the invention as expressed in the accompanying claims. Therefore, ,without limiting myself in this respect, Ifelaim:

l. In a fastener-applying implement, a member having a head at one end, a fluid-pressure chamber, in said member, a valve in said member in communication with said fluid-pressure chamber, a cylinder rotatably connected with theA headL on said first-named member, a piston in the bore of said cylinder, a throat beneathv said cylinder, means for feeding fasteners into said throat, a. driver connected to said piston for movementV therebyl through the throat to'drive the fasteners into the work, and means for operating said valve to admit pressure to the cylinder from the chamber in the first-named member to actuate the piston.

2. In a manually-operable stapling implement, a hol low'handle-rnember containing a fluid-pressure chamber andhaving a head at one end, a cylinder rotatably connected with the headof saidmember, a staple-magazine connected to said cylinder and extending radially therefrom, a throat atA the end of said magazine for receiving staples therefrom, a piston in the boreV of said cylinder, a driver connected to said piston for actuating it to drive the staples through the throat to apply them to the work, detent-means for releasably holding the cylinder with said magazine in different positions of angular relationship with respect to said first-named member, and manually-operative valve-means in said handle-member for admitting fluid-pressure to said cylinder for sliding the piston to actuate the staple-driver.

3. In a stapling implement, a hollow member having a fluid-pressure chamber contained therein and a head at one end, a cylinder rotatably mounted in ay bore in the head of said hollow member, a piston slidable in said cylinder, valve-means in said hollow member for admitting fluid-pressure to slide the piston in the bore of said cylinder, a staple-magazine carried by saidcylinder and extending radially therefrom, a nosepiece at the end of said magazine formed withl a throat into which the staples are fed from said magazine, a staple-driver connected to said piston for movement thereby to drive the .staples through the throatand into the worlgak spring for returning the piston to first position to'V withdraw the staple-driver through'the throat, and means for releasably locking the cylinder in different positions" with said staple-magazine and throat adjusted in angular relationship with respect to said hollow member.

4. In astapling implement, a longitudinally-extending handle-member having a fluid-pressure chamber vcontained therein and a head at one end, a cylinder rotatably mounted in a bore in the head of said handle-membenapiston slidable in said cylinder, valve-means in said handler member for admitting fluid-pressure to the cylinder to slide the, piston in the borel of said cylinder, a staplemagazine carried by said cylinder and extending radially therefrom, anosepiece at the end of said magazine formed with a throat intowhich the staples may be fed from said magazine, a staple-driver connected with said piston for movement thereby to drive thev staples through the throat and into the work, a spring' for returning the piston to rst position to withdraw the staple-driver through the throat, and a resiliently-actuated pawl engageable with means between the cylinder and handlemember for latching the cylinder in different positions of` adjustment with the magazine in different angular relation to the handle'member.

V5. In a stapling implement vcomprising a longitudinallyextending handle-member containingv a fluid-pressure chamber and having a head at one end formed with a.

cylindrical bore, a cylinder rotatable in said bore in the head of the handle-member, means for supporting a staple-magazine beneath said cylinder extending radially therefrom, a staple-throat at the forward end of said magazine for receiving staples fed therefrom, a piston in said cylinder, a driver-blade connected to said piston for movement therefrom to slide through the throat at the end of the magazine, valve-means in the handlemember for admitting fluid pressure to the end of the cylinder for actuating said piston to operate the stapledriver, detent-notches spaced around said cylinder, a pawl on the handlemember engageable with said detentnotches for holding the cylinder with the staple-magazine in adjusted angular relation with respect to the handlemember, and a spring in the cylinder for returning the piston to rst position after a driving stroke of the stapledriver.

6. In a stapling implement, a longitudinally-extending handle-member having a head at one end with a bore therein, a cylinder rotatably mounted in the bore of said head, a staple-magazine supported by said cylinder extending radially therefrom, a nut on said cylinder engageable with threads in the bore of the head for holding said cylinder in connection with said handle-member, a piston in said cylinder, a staple-driver connected -to said piston for operation thereby to drive staples fed from the magazine, and means for admitting Huid-pressure into the cylinder for actuating the piston to operate the driver for driving the staples into the work.

7. In a stapling implement, a handle having a head at one end, a cylinder rotatably connected with said head, a staple-magazine extending radially from said cylinder, a piston reciprocable in said cylinder, a staple-driver connected to said piston, means for admitting lluid pressure into said cylinder for actuating the piston to operate the staple-driver for driving staples fed from the magazine,

a nut in threaded engagement between said head and said cylinder for holding the cylinder in connection with the head, and means for locking the nut with the cylinder connected with said head on the handle.

8. In a fastener-applying implement, a hollow handlemember extending horizontally and having a duid-pressure chamber in its interior, said handle-member formed with an enlarged head at one end, a cylinder held in a vertical bore in said head and projecting downwardly therebeyond, a piston slidable in the bore of said cylinder, an arm integral with said cylinder and extending radially therefrom in normally parallel relation to the horizontal handle-member, a fastener-magazine suspended below said arm, a throat at the forward end of said fastener-magazine, means for feeding the fasteners from said magazine into said throat, a driver connected to said piston for movement thereby through the throat to drive fasteners into the work, a valve in said handle-member communicating with the upper end of the bore in said cylinder, and manually-operative means for opening said valve to admit fluid-pressure from said chamber to the cylinder to cause it to act on the piston to actuate the driver, and a spring for returning said piston to the upper end of the cylinder after each stroke of said driver.

References Cited in the ile of this patent UNITED STATES PATENTS 1,977,382 Gruis Oct. 16, 1934 2,358,463 Masters Sept. 19, 1944 2,556,992 Wandel June 12, 1951 2,558,403 Wandel lune 26, 1951 2,585,939 Juilfs Feb. 19, 1952 2,585,941 Juilfs Feb. 19, 1952 2,585,942 Juilfs Feb. 19, 1952 2,668,290 Heller Feb. 9, 1954 2,713,165 Campbell July 19, 1955 

